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Digital Broadcasting Transission/Reception System Capable of Improving Receiving and Equalizing Performance and Signal Processing Method Thereof

a digital broadcasting and transmission system technology, applied in the field of digital broadcasting transmission/reception system, can solve the problems of low capacity to remove multipath and equalize received signals using this, poor reception performance in poor channels, etc., to improve equalization performance, improve reception performance, improve the effect of equalization performan

Active Publication Date: 2007-11-01
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a digital broadcasting transmission system that improves reception performance and equalization performance of a reception system by adding a predefined known sequence, manipulating a pattern, and transmitting a signal. This system can generate known data to replace stuff bytes in a data stream, which helps to remove multipath and equalize the received signal. The system includes a randomizer, sequence provider, stuff byte replacer, encoder, and transmission part. The technical effect of this invention is to improve the performance of digital broadcasting transmission and reception systems in poor channels, especially in Doppler fading channels.

Problems solved by technology

Accordingly, reception performance is not good in poor channels, especially in a Doppler fading channel.
This is not frequent so that the capacity to remove the multipath and equalize the received signal using this is low.

Method used

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  • Digital Broadcasting Transission/Reception System Capable of Improving Receiving and Equalizing Performance and Signal Processing Method Thereof
  • Digital Broadcasting Transission/Reception System Capable of Improving Receiving and Equalizing Performance and Signal Processing Method Thereof
  • Digital Broadcasting Transission/Reception System Capable of Improving Receiving and Equalizing Performance and Signal Processing Method Thereof

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Embodiment Construction

[0042] Hereinafter, the present invention is described in detail with reference to the accompanying drawings.

[0043]FIG. 3 shows a frame structure of a TS packet and FIG. 4 shows a frame structure of a TS packet with a stuff byte. The TS packet of FIG. 3 consists of a MPEG-2 header, adaptation field or ES data. According to the present invention, stuff bytes are inserted in a packet of FIG. 4 as shown in FIG. 3 so that all the TS streams have adaptation fields.

[0044] That is, the MPEG-2 TS packet of FIG. 4 is an MPEG-2 packet of 188 bytes and consists of an MPEG-2 header of 4 bytes with MPEG syncs, an adaptation field length section of 1 byte indicating length of the adaptation field, an adaptation field data section having other information of 1 byte and stuff bytes of N bytes, and ES data of 188−(4+2+n) bytes.

[0045]FIG. 5 is a block diagram to show a digital broadcasting transmission / reception system according to an embodiment of the present invention. In FIG. 5, the digital bro...

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Abstract

A digital broadcast transmitting and receiving system and a signal processing method thereof that improves the receiving performance of the system. A digital broadcast transmitter includes a randomizer to receive and randomize a data stream into a specified position of which stuff bytes are inserted, a replacement sequence generator to generate known data including a predefined sequence, a stuff-byte exchange unit to insert the known data into the specified position of the data stream into which stuff bytes are inserted, an encoder to encode the data stream output from the stuff-byte exchange unit for an error correction, and a transmission unit to modulate the encoded data stream, RF-convert the modulated data stream and transmit the RF-converted data. The digital broadcast receiving performance is improved even in an inferior multi-path channel by detecting the known data from the received transmission and using the known data for synchronization and equalization in a digital broadcast receiver.

Description

TECHNICAL FIELD [0001] The present invention relates to a digital broadcasting transmission / reception system, and more specifically, to a digital broadcasting transmission / reception system generating stuff byte in a Moving Picture Experts Group-2 transport stream (MPEG-2 TS), and operating and transmitting a pattern of known data using the stuff byte to improve reception performance and equalization performance of a reception system and a signal processing method thereof. BACKGROUND ART [0002] The Advanced Television Systems Committee Vestigial Sideband (ATSC VSB) method, a U.S-oriented terrestrial waves digital broadcasting system, is a single carrier method and uses a field sync by 312 segment unit. Accordingly, reception performance is not good in poor channels, especially in a Doppler fading channel. [0003]FIG. 1 is a block diagram of a transmitter / receiver of a general U.S-oriented terrestrial waves digital broadcasting system according to the ATSC digital television (DTV) stan...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04L23/00H04B1/76H04B7/005H04N7/015H04J3/00H04L1/00H04N7/173H04N21/426
CPCH04L1/0041H04L1/0071H04L25/0224H04L2001/0093H04L2025/03382H04N19/89H04N21/23608H04N21/23611H04N21/2383H04N21/4344H04N21/4382H04N21/23412H04N7/015
Inventor PARK, EUI-JUNCHANG, YONG-DEOKPARK, SUNG-WOO
Owner SAMSUNG ELECTRONICS CO LTD
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